[EN] PROCESS FOR SYNTHESISING HELIOTROPINE AND ITS DERIVATIVES<br/>[FR] PROCEDE DE SYNTHESE D'HELIOTROPINE ET DE SES DERIVES
申请人:ENDURA SPA
公开号:WO2005042512A1
公开(公告)日:2005-05-12
A new high-yield, easily industrialized process for synthesising compounds of formula (IV), in which X1 and X2, the same or different, are linear or branched C1-C8 alkyls, n and m are 0,1 or 2, with the proviso that n and m are not simultaneously 0; or (OX1)n and (OX2)m taken together form an O-T-O group where T is chosen from -CH2-, -CH2CH2, -CH2CH2CH2-, -C(CH3)2-. The process comprises treating a chloromethyl derivative (I) with an alkaline acetate to form the intermediate acetylderivative (II); the intermediate (II) is to hydrolysed to form the alcohol (III); the alcohol (III) is then oxidised in the presence of air and catalysts to obtain the desired derivative (IV). The process runs its course within a short period of time, with high yields and high selectivity; in addition, the process does not require purification and separation of the intermediates and can therefore be favourably conducted in a single batch.
一种新的高产率、易于工业化的合成化合物的过程,其化学式为(IV),其中X1和X2,相同或不同,为直链或支链的C1-C8烷基,n和m为0、1或2,但n和m不能同时为0;或者(OX1)n和(OX2)m一起形成一个O-T-O基团,其中T选择自-CH2-、-CH2CH2、-CH2CH2CH2-、-C(CH3)2-。该过程包括将氯甲基衍生物(I)与碱性乙酸盐反应,形成中间体乙酰衍生物(II);将中间体(II)水解形成醇(III);然后在空气和催化剂的存在下将醇(III)氧化,得到所需的衍生物(IV)。该过程在短时间内完成,产率高,选择性高;此外,该过程不需要纯化和分离中间体,因此可以有利地在单批中进行。